Cross Lake Band of Indians Wastewater Lagoon Upgrade

CLBOI is undertaking a wastewater lagoon upgrade project for the community of Cross Lake. The project involves the upgrade of the existing two-cell wastewater treatment lagoon to include a new cell and a SAGR treatment system. There are two parts to the project. The existing wastewater lagoon consists of two cells, the southerly cell is the existing aerated cell and is suspected to contain a large rock outcrop along the floor of the cell; the north cell is the polishing cell.

Part 1:

  • A new aerated cell will be established to the east of the existing aeration cell. The new cell (cell #1) will have a synthetic liner that has a sand layer on top of the synthetic liner and will be aeriated.
  • The existing aerated cell will be modified to become the secondary cell (cell #2). The cell will be dewatered and sludge removed. The large rock outcrop in the cell will be removed through blasting of the rock. The cell will then be lined with a synthetic liner topped by a sand layer and will be aerated.
  • A new two cell SAGR system will be installed to the west of the refurbished cell #2.
  • A blower building will be constructed to the north of the new cell (refer to drawing CL103 Item #7)

Part 2:

  • Two options are currently being explored for the decommissioning of the existing north cell (polishing basin)
    • Dewatering of the cell and the sludge remove to a sludge dewatering cell with geotubes, then capping of the cell.
    • Dewatering of the cell and the sludge left in situ and the cell capped.


Latest update

November 16, 2022 – Indigenous Services Canada issued its notice of determination and determined that the project is not likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination for the Cross Lake Band of Indians Wastewater Lagoon Upgrade - November 21, 2022
1 Public Comment Period on Intent to Make a Determination - July 19, 2022


Tebesi Mosala
Indigenous Services Canada
Tebesi Mosala, Senior Environmental Specialist
200-365 Hargrave Street
Winnipeg, Manitoba R3C 4H4
Telephone: 204-984-0711
Fax: 204-983-2936

  • Location

    • Cross Lake (Manitoba)
  • Nature of Activity

    • Water Management
  • Assessment Status

  • Start Date

  • Proponent

    Cross Lake Band of Indians
  • Authorities

    • Indigenous Services Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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